Kiran Ppt1
Kiran Ppt1
Kiran Ppt1
computer hardware
Hardware
Software
Data
People
Methods
Computer Hardware Module:
The general Hardware components of GIS
includes
central processing Unit
mass storage units , Such as hard disk
drivers and tape drivers.
Peripherals such as :
Digitizers or Scanners
printer or plotter
visual display unit (VCD)
The central processing unit is linked to a disk
drive storage unit, which provides space for
storing data and programs. A digitizer,
scanner and other device is used to convert
data from maps and documents into digital
form and send them to computer. A digitizer
board is a flat board used for vectorization of
any map object. A plotter or other kind of
display device is used to present the result of
the data processing and a tape device is used
for storing data or programs on magnetic tape.
Computer Software Module
The GIS software includes the programs and the
user interface for driving the hardware. GIS
software is essential to generate, store, analyze,
manipulate and display geographic information or
data. A good GIS software requires user
friendliness, functionalities, compatibilities,
updatability, documentation, cost effectivness. The
following is a list of GIS software producers and
their main products.
Environmental Systems Research Institute ( ESRI ): Arc
Info, Arc View.